1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
quester [9]
3 years ago
13

Solve by completing the square x^2-6x-16=0

Mathematics
2 answers:
Greeley [361]3 years ago
7 0

Answer:

x = 8 or

x = -2

Step-by-step explanation:

<h2><em>Completing The Square</em><em>:</em></h2>

x² - 6x - 16 = 0

Here,

a = 1

b = -6

c = -16

Now,

x² - 6x + [6/2(1)]² - [6/2(1)]² - 16 = 0

x² - 6x + (6/2)² - (6/2)² - 16 = 0

x² - 6x + (3)² - (3)² - 16 = 0

(x - 3)² - 9 - 16 = 0

(x - 3)² - 25 = 0

(x - 3)² = 25

x - 3 = +-√25

x - 3 = +- 5

x = 3 +- 5

x = 3 + 5 or x = 3 - 5

<em><u>x = 8 or x = -2</u></em>

Hope it's helpful

Elan Coil [88]3 years ago
3 0

Answer:

Step-by-step explanation:

You might be interested in
Find the value of this expression if x = 3.<br> x2 + 3/X
Elden [556K]

Answer:

7

Step-by-step explanation:

3 0
2 years ago
I need help with both of these please I will be giving a brainlyist to the fist person to answer​
kodGreya [7K]

A general formula for the volume of a container is V = length x width x height (other words may be used in place of the three given).

3. 900 in^3, the fourth option

V = 20 x 15 x 3

V = 900 in^3

4. 288 in^3, the third option

V = 6 x 6 x 8

V = 288 in^3

Hope this helps!! :)

8 0
3 years ago
Read 2 more answers
The population of a city has increased by 26 % since it was last measured. If the current population is 44,100 , what was the pr
postnew [5]
44,100 × 0.26 = 11,466

5 0
3 years ago
What is 17/21 - 2/10 = ___ - ___ = ____
umka2103 [35]

Step-by-step explanation:

step 1. 17/21 - 2/10 = x (in order to subtract you need a common denominator)

step 2. (17/21)(10/10) - (2/10)(21/21) = x

step 3. 170/210 - 42/210 = x

step 4. 128/210 = 64/105 = x

step 5. x = 64/105.

5 0
3 years ago
Can you please help me. If you help me i will give you brainliest ( question 2-5)
vfiekz [6]

Answer:

I have made it in the above picture

5 0
3 years ago
Other questions:
  • The resale value of a textbook decreases by 25% with each previous owner. A new textbook is sold for $85. Which function represe
    10·2 answers
  • What is the range of y = sin θ ?
    14·2 answers
  • If a triangular prism has a height of 9 a width of 9 and length of 6 what is the volume in cm3
    10·1 answer
  • 3. Find the radius of a cylinder with a volume of 950 cm3<br>and a height of 10 cm.​
    10·1 answer
  • A store manager records the total visitors and sales, in dollars, for 10 days. The data is shown in the scatter plot. What concl
    10·1 answer
  • (10+4×4×4×4+22)÷4/8?? what is the answer??​
    13·2 answers
  • I need help please!!!
    9·2 answers
  • F. 40% of students use the Math Lab on a consistent basis. If 1,250 students are
    9·1 answer
  • HELPLOPOOOPPPPPOPPPPP
    11·2 answers
  • Which of the following is the solution to the system of equations?<br><br> y=2−xy=3x−1
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!